Diff: BusOut.h

Revision:

122:f9eeca106725

Parent:

93:e188a91d3eaa

Child:

123:b0220dba8be7

--- a/BusOut.h	Wed May 25 16:44:06 2016 +0100
+++ b/BusOut.h	Thu Jul 07 14:34:11 2016 +0100
@@ -30,6 +30,8 @@
      *
      *  @param p<n> DigitalOut pin to connect to bus bit <n> (p5-p30, NC)
      *
+     *  @Note Synchronization level: Thread safe
+     *
      *  @note
      *  It is only required to specify as many pin variables as is required
      *  for the bus; the rest will default to NC (not connected)
@@ -63,6 +65,7 @@
      *    Binary mask of connected pins
      */
     int mask() {
+        // No lock needed since _nc_mask is not modified outside the constructor
         return _nc_mask;
     }
 
@@ -82,6 +85,8 @@
 #endif
 
 protected:
+    virtual void lock();
+    virtual void unlock();
     DigitalOut* _pin[16];
 
     /** Mask of bus's NC pins
@@ -90,6 +95,8 @@
      */
     int _nc_mask;
 
+    PlatformMutex _mutex;
+
    /* disallow copy constructor and assignment operators */
 private:
     BusOut(const BusOut&);